Derrick.



PATENTED NOV. 8, 1904.

J. H. FOX.

DERRICK.

APPLIO/ATION FILED MAB..21, 1904.

N0 MODEL.

anmmtoz @0765 A47 02 Witt beams" UNITED STATES Patented November 8, 1901.

PATENT LOFFICE.

JAMES H. FOX, OF BOWEN, MONTANA.

DERRICK.

SPECIFICATION forming part of Letters Patent N 0. 774,660, datedNovember 8, 1904.

Application filed March 21, 1904. Serial No. 199,072. (No model.)

To all whom it may concern: Be it known that I, JAMES H. Fox, a citizenof the United States, residing at Bowen, in the county of Beaverhead,State of'Montana, have invented certain new and useful Improvements inDerricks; and Idohereby'declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to derricks, and more particularly to portablederricks such as are employed in stacking hay, the object of theinvention being to provide a derrick which may be made at a low price,will be durable and simple in construction, and which may be readilytransported from place to place.

A further object of the invention is to provide a portable derrickembodying a baseframe and a mast adjustable thereon to lie at variousangles thereto.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in both views, Figure1 is a perspective view showing aderrick embodying the presentinvention.- Fig. 2 is a section taken longitudinally through the rollerand the adjacent portion of the baseframe. 7

Referring now to the drawings, the present derrick comprises abase-frame including sills 5 and 6, which are connected at their forwardends and which diverge rearwardly. At a point substantially midwaybetween the ends of the sills 5 and 6 are bearings 7 and 8, in which aremounted the trunnions 9 and 10 of a roller 11, to which the tower ormast of the derrick is connected by mortising into said roller the lowerends of the beams 12 and 13, which form the sides of the mast. The beams12 and 13 converge upwardly and are connected at their upper ends by thetransverse piece or head 14, to which are connected braces beams 12 and13.

15 and 16 at the central part thereof, which diverge downwardly and areconnected to the By reason of the mounting of the roller in bearings themasts of the derrick may be swung in a vertical plane to lie at'variousangles to the base-frame and with its head at various elevations, saidmast being held in its different adjusted positions by the guys 17 and18, which are attached to the head 14. and V to the rear ends of thesills 5 and 6, said mast being further held by a guy 19, which isattached to the forward end of the base-frame and is forked at its upperend, the

forked members 20 and 21 being connected to the head 14.

The guys are attached to cleats on the'base-frame, so that they may bemanip 'ulated to vary the angle between said frame and the mast.

To give the proper rigidity to the baseframe, a transverse brace 22 isconnected to the sills 5 and 6 in the rear of the roller 11.

Draft appliances 25 are attached to the forward end of the base-frame,so that the structure may be drawn from place to place.

What is claimed is- A portable derrick comprising a base-framecomprising sills connected at their forward ends and divergingrearwardly, a drum rotatably mounted transversely upon the sills, a mastincluding beams mortised at their lower ends into the drum and having atransverse head connecting their opposite ends and braces between thehead and said beams, guys attached to the head and to the rear ends ofthe sills and a guy attached to the forward end of the base -frame andhaving its upper end forked and connected to the head. I

In testimony whereof I affix my signature in presence of two witnesses..1

JAMES H. FOX.

Witnesses:

J. F. RHoDns, J. (J. HILL.

